In an experiment with t = 4 populations means, consider the four linear combinations of those means.
- a. Which of the four linear combinations are contrasts?
- b. Which pairs of contrasts are orthogonal?
- c. Suppose we have two contrasts:
Is testing H0 : l1 = 0 equivalent to testing H0 : l2 = 0? Justify your answer.
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An Introduction to Statistical Methods and Data Analysis
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